Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 1305-BA03A |
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Product Type | Adjustable Frequency AC Drive |
| Product Line | Bulletin 1305 AC Drives |
| Input Voltage | 380-460V AC, Three-Phase |
| Input Current | 2.2 A |
| Output Voltage | 0-460V AC |
| Output Current | 2.3 A |
| Motor Rating | 0.75 kW / 1 HP |
| Output Frequency | 0-400 Hz |
| Control Methods | Standard Boost V/Hz, Standard Volts/Hz, Custom Volts/Hz |
| Discrete Inputs | 8 (5 fixed, 3 programmable) |
| Analog Inputs | 1× 0-10V, 1× 4-20 mA |
| Analog Output | 0-10V DC |
| Programmable Outputs | 2 (Output 1: 115V AC/30V DC, 5A resistive; Output 2: 24V DC, 50 mA max) |
| Enclosure Rating | IP30 (NEMA Type 1) |
| Operating Temperature | 0°C to 50°C |
| Storage Temperature | -40°C to +70°C |
| Relative Humidity | 0% to 95%, non-condensing |
| Power Dissipation | 34 W |
| Weight | Approximately 3.6 kg (8 lbs) |
Main Features and Advantages
The Allen-Bradley 1305-BA03A offers a practical combination of motor control capabilities, flexible I/O configuration, and robust construction suited for legacy industrial installations. Its design reflects the reliability expectations of the Allen-Bradley 1305 Series.
Flexible Motor Control Methods: The 1305-BA03A supports three distinct control methods: Standard Boost Volts/Hertz, Standard Volts/Hertz, and Custom Volts/Hertz. This versatility allows users to match the drive’s control response to the specific torque requirements of the connected motor and load, whether the application demands high starting torque or smooth steady-state operation. Adjustable acceleration and deceleration times, selectable ramp-to-stop or coast-to-stop behavior, and S-curve acceleration profiles further enhance the 1305-BA03A‘s adaptability to different mechanical system characteristics.
Comprehensive I/O Configuration: With eight discrete inputs, the 1305-BA03A accommodates multiple control signals within a single compact unit. Five inputs are pre-assigned for essential motor control functions—START, STOP, DRIVE ENABLE, and REVERSE—while three additional inputs remain fully programmable for application-specific interlocks, fault resets, or preset speed selection. The two programmable relay outputs enable the 1305-BA03A to signal drive status, fault conditions, or motor running state to external control systems or indicator panels. Analog I/O includes both 0-10V and 4-20 mA inputs for speed reference signals, plus a 0-10V output for monitoring motor speed or load conditions.
Practical Installation and Protection: The 1305-BA03A is rated for operation in ambient temperatures up to 50°C, with derating guidelines available for installations approaching this limit. The IP30 (NEMA Type 1) enclosure provides basic protection against solid foreign objects and is suited for installation in control rooms or protected cabinet environments. The drive’s power dissipation of 34 Watts allows for straightforward thermal management in most enclosure designs. While the 1305-BA03A is a discontinued model, its established design and widespread historical deployment mean that technical documentation and application knowledge remain readily accessible for maintenance and replacement planning.
